GENERAL40693

• Permit No: C1982056
• IBM Index Class Name: General Documents
• Doc Date: 9/27/2004
• Doc Name: Letter regarding Tipple Map 15
• From: Twentymile Coal Company
• To: DMG
• Permit Index Doc Type: General Correspondence
• Media Type: D
• Archive: No

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Table 6
FISH CREEK TIPPLE
Clfl_VERT DESIGN SPECIFICATIONS
V
1
Area and
Culvert
No.
Drainage Area
(Acres)
Curve
No. Time of
Concentration
(Hours) Peak Flow
From Drainage
Area (cfs) Peak Flow
Thru Culvert
(cfs) Culvert
Diameter
(Inches)

HW/D

1 3.31 85 .16 2.94 2.94 18 .65
2 .30 85 .O1 0.30 0.30 18 <.50
3 15.77 68 .30 2.16 2.16 (2) 12 .58
4 7.74 68 .24 1.18 1.1A 12 .70
5 .75 85 .03 0.76 1.06 24 <,50
6 8.50 68 .07 1.73 2.91 30 <.50
7 1.57 85 .11 1.55 5.52 24 .62
8 2.47 85 .11 2.45 7.97 24 .77
References:
"Applied Hydrology and Sedimentology for Disturbed Areas"
"Handbook of Steel Drainage and Highway Construction Products"